Tack-pulling machine.



' w. c. STEWART.

TACK PULLING MACHINE. APPLICATION FILED MAR.15,1913.

Patented Dec. 21, 1915.

COLUMBIA PLANOGRAPH conwAsmNdToN, D1C.

U marr es snares PATENT orrios.

wi'LLIA-MosTnwAR-T; or SWAMPSCOTT, iviAssaonosnrrsassieivon T UNITED SHOE MACHINERY icoivrraiw,

JERSEY.

To all whom it may concern:

Be it known that I, VVILLIAM C. STEWART, a subject of the King of Great Britain, residing at S'wampscott, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Tack-Pulling Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to tack pulling machines and more particularly to machines of this type which are employed for removing insole tacks.

Insole tacks are generally driven through the insole into the last of the .shoe with the head of the tack embedded deeply in the sole, and the object'of the present-invention is to provide a machine of a simple and comp act construction which removes these tacks with certainty and rapidity. With this object in view, the several features of the invention consist in certain novel features of construction, combinations and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from'the following description.

In the accompanying drawings Figure -1 represents a side elevation of a machine embodying the several features of the invention in their preferred forms; Fig. 2 is a section upon the line 2'2 of Fig. 1, illustrating an elevation of the tackpulling mechanism and positioning device; Fig. 3 is a section upon the'line 3 -3 of Fig. 2; and Fig. 4 is a view partially diagrammatic, showing 'the location of the tack and the path of the tool.

The machine shown in the illustrated embodiment of the invention is provided with a rotary tack pulling tool supported with its axis of rotation located substantially parallel to the tack to be removed, and means for positioning the tack to be removed in the path of the tack engaging edge of the tool.

In the simplest and most efficient form of the invention which has yet been devised, the tool is provided with a tack engaging edge positioned radial to the axis-of rotation of the tool and located whollv one side thereof. The tack pulling tool 1 is se- Specification of LettersPatent.

OF PATERSON, NEW JERSEY, A CORPORATION OF- TACK-FULLING- MACHINE.

- Patented Dec. 21, 1915.

Application filed March 15, 1913. Serial No. 754,509.

cured in any suitable manner to the lower end of a shaft 2 journaled vertically in bearings 3 formed in the machine frame 1. The shaft 2'is driven by a pulley 6 connected-to a source of power through a belt 7 passing over an idler pulley 9. The tack is located in the path of the pulling tool 1 by a positioning device consisting ofa'foot 10 adjustably secured in the head 11 clamped to the lower'bearing 3. As shown clearly in Figs. 2 and 4, the tack engaging edge of the tool is positioned wholly at one side of the axis of rotation, thus causing the edge to be moved in a circumferential path toward and away from the tack to be removed when the tool is rotated.

When removing insole tacks from a shoe it is desirable to impart tack engaging and tack pulling movements to the tool toward and from thesole to cause the tool to engage beneath the head of a tack and positively remove it. To this end, the shaft 2 is slidingly mounted in the bearings 3 and is provided with a peripheral cam 13 secured to its upper end, which imparts axial movements to the tool during a continuous rotation of the shaft. This is accomplished by a cam roll 14 engaging with the peripheral cam and journaled upon a relatively stationary por tion of the machine. In order to allow "the axial movements of the shaft the pulley is spllned to the shaft and is held between the bearing members 3. Y In the present invention, mechanism is provided iiiider' the control of the operator" for imparting additional movements'to'the tool toward and from the sole to position the tool in any desired operative relation to' the sole. To this end the cam roll 1& is journaled upon an arm 15 fulcrumed at 16 and connected at its opposite end to a treadle 17 through a connecting rod 18. The movement of the .treadle in opposite directions is limited by a pair of adjustable stop collars 20 and 21 engaging with opposite sidesof a stationary head 22 through which the concurately determined. After the treadle has been moved into operative relation \vith'the slice,- tack engaging 'and' tackp'ulling, move ments are imparted to the tool through the cam 13, engaging With the cam roll 14 which isheld stationaryiby the pressure upon the treadle holding the stop collar' 20 in enr not essential, except so far as specified in'the claims, a'ndmay-be changed or modified Without departing from thejbroader features of the invention. V

. 'The invention having been described, What I is claimed is: 1

, engaging edgearranged to engage and.re-. n move a tack extending 1n the dlrectlon of the shaft, and means for positionlng the i "1. A tack pulling machine, havingin com-1 bination, a shaft, a single tack pulling tool mounted upon the shaft and having ata ck tack to be removed. y r 2A tack pulling machine, having, in combination, a rotary tack pulling tool hav ing' a tack engaging edge positioned substantially radial to the axis of'rotation, means for rotating thetool, and means for positioning the tack to be removed in the path of'the tool. e v

3.1A tack pulling machine, having, in combination, means for positioning the Work, a rotary tack pulling tool having a tack engaging edge positioned substantially radial to the aiiis of rotation, means for rotating the tool, and means under the control of the operator forfmoving the tool axially into and out of engagement With the Work.

4:. A tack pulling machine, having, in

I combination, a rotary tack pulling tool having a tack engaging edge positioned substantially radial to the axis of rotation, means Copies of this patent may be obtained for V edge to engage and pull a tack.

for rotating the tool, means for imparting axial movements to the tool, and means for "positioning the tack to'be removed inthe pathof the tool. v 5. A tack pulling machine, having, in

. combination, a rotary tack pulling tool hav! ing a tack engaging edge positioned radial to the axis of, rotation and located Wholly v 6. A tack pulling machine, having in com.

bination, a shaft, a single tack pulling tool mounted upon the shaft and having'a tack engaging edge arranged to engage and remove a tack extending in; the. direction-of the shaft, a cam for imparting axial movements to the tool, and means forv positioning the tack to be removed.

7. A; tack pulling machine, having, in combination, a rotary tack pulling tool," a supporting shaft for the tool, 'meanslfor rotating the shaft, a cam secured to; the shaft for imparting 'an' axial movement to the shaft, a treadle, and connections between the treadle and camxto impart a fbodily movement to the cam. a"

8. A tack pulling machine, having, in

combination, a tack pulling tool, a support 5 ing shaft for the tool, means for rotating the shaft, a cam secured tothe shaft, a treadle, connections between the treadle-a-nd cam, and means for limiting the'mov'ement of the treadlein opposite directions.

-9. A tack pulling machine, having in combination, a rotary tack pullingtool having a tack engaging edgevlying in a plane subs stantially normal to the axisof rotation,

and means for rotating the tool to cause the .4;

WILLIAM G. STEWART? \Vitnesses: 7

GHEsTER E. Rooms, RUTITI E. WARD.

five cents each, by addressing the Commissioner of Patents,

Washin g ton,D. G. v 

